default environment append from kconfig

Hello all, is there any kconfig mechanism in u-boot to append environment variable to the default one?

I am aware of CONFIG_USE_DEFAULT_ENV_FILE, but this will completely replace it, looking into the code I was not able to find anything, but I wonder if something from this https://lore.kernel.org/all/20211022030852.1986718-1-sjg@chromium.org/ can be used.

Francesco